I love One From the Vault. My first tape was a high-generation version of that show, so I was very pleased they released it officially. Probably the best live versions of most of the Blues For Allah material... and they even do the whole Side 2 Suite (beautifully)!
"Under Eternity Under Eternity Under Eternity Blue..." :)
I almost always pick Blues for Allah itself -- my fav GD records along with 'Garcia' -- and then sometimes Kezar 3-23?-75. I lost track of Vault One after a fire, but I should track that date down again.